Abstract: Information transmission methods and devices relating to the field of communications technologies to provide a channel information feedback and increase a success rate of the channel information feedback are described. A first control information is received by a first device. The first control information is sent by a second device. A receiving status information is sent by the first device to the second device. The receiving status information is used to indicate whether the first control information is correctly received.

Abstract: Embodiments of this application provide example information receiving methods and receiving apparatuses. One example information receiving method includes receiving, by a receiving apparatus, an index from a sending apparatus, wherein the index indicates precoding information used for a single codeword. The receiving apparatus can then determine, based on the index, the precoding information used for the single codeword.

Abstract: In the method, a terminal device receives first downlink control information from a network device, where the first downlink control information includes a first hybrid automatic repeat request (HARQ) process number. The terminal device receives, on a first frequency band, a first data packet carrying a first transport block, and receives, on a second frequency band, a second data packet carrying a second transport block, where the first HARQ process number corresponds to the first transport block on the first frequency band and the second transport block on the second frequency band. The terminal device performs joint decoding on the first data packet and the second data packet. The first transport block is the same as the second transport block. By using the method and the apparatus provided in the embodiments of the present invention, data transmission reliability in a multi-band transmission scenario can be improved.

Abstract: Example methods and apparatus for transmitting uplink control information are described. One example method includes receiving downlink control information by a terminal device, where the downlink control information includes resource information of a data channel, first indication information, and second indication information. The first indication information indicates a power offset value between a transmission time interval k and a transmission time interval k?1, and the second indication information is used to determine a power adjustment value in the transmission time interval k. The terminal device determines transmit power in the transmission time interval k based on the power offset value and the power adjustment value. The terminal device transmits uplink control information based on the transmit power, where the uplink control information includes feedback information for the data channel.

Abstract: Embodiments of this application provide a method for sending downlink control information, a terminal device, and a network device, and relate to the communications field, to resolve problems of low flexibility and low reliability of a system DCI configuration. The method includes: receiving DCI for scheduling downlink data to be transmitted as one codeword, wherein the DCI comprises a value of a set of values each indicating a corresponding quantity of layers of the one codeword and one or more antenna ports used for sending the one codeword, and wherein the set of values comprises: a first value indicating that the quantity of layers of the one codeword is 2, and a first antenna port and a second antenna port are used for sending the one codeword, and a second value indicating that the quantity of layers of the one codeword is 2 and a third antenna port and a fourth antenna port are used for sending the one codeword.

Abstract: The present disclosure relates to communication methods and devices. One example method includes determining that a downlink bandwidth belongs to one of N downlink bandwidth sets, where each downlink bandwidth set of the N downlink bandwidth sets corresponds to one first value and one second value, at least two first values corresponding to at least two downlink bandwidth sets of the N downlink bandwidth sets are different, each downlink bandwidth set of the N downlink bandwidth sets corresponds to a same second value, the second value is a common divisor of N first values corresponding to the N downlink bandwidth sets, determining that a quantity of resource blocks included in a first resource block group is a first value corresponding to the downlink bandwidth set to which the downlink bandwidth belongs, and determining that a quantity of resource blocks included in a precoding resource block group is the second value.

Abstract: In a control information receiving method, a second device receives m control channels from a first device. Control information carried on the m control channels corresponds to a same hybrid automatic repeat request (HARQ) process and is consecutive control information of the HARQ process, control information carried on each of the m control channels includes false alarm indication information, and m is a positive integer greater than or equal to 2. The second device determines, based on a combined state of false alarm indication information carried on the m control channels, whether there is a false alarm in control information carried on at least one of the m control channels.

Abstract: Embodiments of the present invention relate to the communications field, and disclose a data transmission method and a device, to resolve a problem of a waste of transmission resources caused by transmitting downlink data by using only some symbols included in a DwPTS. A specific solution is: A network device sends second downlink data in a second time interval, where the second time interval is in the second slot of a first special subframe or the first slot of a second special subframe, the first special subframe is a special subframe of which downlink pilot timeslot duration is greater than 0.5 millisecond, the second special subframe is a special subframe of which downlink pilot timeslot duration is less than 0.5 millisecond, and the second time interval includes N symbols, where N is an integer greater than or equal to 2 and less than or equal to 6. The embodiments of the present invention are applied to a data transmission process.

Abstract: A method includes: receiving, by a terminal device, control signaling in a first time interval (TI), where the control signaling instructs the terminal device to send a sounding reference signal (SRS); after receiving the control signaling, determining, by the terminal device, a target sending time period from at least one sending time period, where the target sending time period is a first sending time period, after a first moment, in the at least one sending time period, and an interval duration between the first moment and a start moment of the first TI is less than P milliseconds, or an interval duration between the first moment and a start moment of a symbol that carries the control signaling in the first TI is less than P milliseconds, where 0<P?4; and sending, by the terminal device, the SRS in the target sending time period.